| # |
| # Block layer core configuration |
| # |
| menuconfig BLOCK |
| bool "Enable the block layer" if EMBEDDED |
| default y |
| help |
| This permits the block layer to be removed from the kernel if it's not |
| needed (on some embedded devices for example). If this option is |
| disabled, then blockdev files will become unusable and some |
| filesystems (such as ext3) will become unavailable. |
| |
| This option will also disable SCSI character devices and USB storage |
| since they make use of various block layer definitions and |
| facilities. |
| |
| Say Y here unless you know you really don't want to mount disks and |
| suchlike. |
| |
| if BLOCK |
| |
| config LBD |
| bool "Support for Large Block Devices" |
| depends on !64BIT |
| help |
| Say Y here if you want to attach large (bigger than 2TB) discs to |
| your machine, or if you want to have a raid or loopback device |
| bigger than 2TB. Otherwise say N. |
| |
| config BLK_DEV_IO_TRACE |
| bool "Support for tracing block io actions" |
| depends on SYSFS |
| select RELAY |
| select DEBUG_FS |
| help |
| Say Y here, if you want to be able to trace the block layer actions |
| on a given queue. Tracing allows you to see any traffic happening |
| on a block device queue. For more information (and the user space |
| support tools needed), fetch the blktrace app from: |
| |
| git://brick.kernel.dk/data/git/blktrace.git |
| |
| config LSF |
| bool "Support for Large Single Files" |
| depends on !64BIT |
| help |
| Say Y here if you want to be able to handle very large files (bigger |
| than 2TB), otherwise say N. |
| |
| If unsure, say Y. |
| |
| endif # BLOCK |
| |
| config BLK_DEV_BSG |
| bool "Block layer SG support" |
| depends on SCSI && EXPERIMENTAL |
| default y |
| ---help--- |
| Saying Y here will enable generic SG (SCSI generic) v4 |
| support for any block device. |
| |
| source block/Kconfig.iosched |